How to make selections?

Question

Python

Tell me what to read, how to google? =)

There is a sign: quality | price | amount.
It is necessary to make selections:
1.
the total quantity and arithmetic mean quality are set (with an acceptable error), you need to make the minimum arithmetic mean price
2. the
total quantity is set, the arithmetic mean price should be minimal, and the arithmetic mean quality should be maximum, and at the same time, you need the ability to adjust the priority of price or quality (the minimum price is not a unit of quality, closer to the minimum price, closer to the maximum quality)

Such an analysis is needed in many places, there are probably some ready-made solutions, for example, in scipy or numpy.

Distribution picture (number by size), required samples for the 2nd item in numbers:

Answer 1

You can google for the phrases “factorial analysis”, “equilibrium price”, “non-price pricing factors”.
I'll explain a little. In this case, the task is reduced to finding an equilibrium price, which is quite simply found by statistical analysis (price, demand). Naturally, it will be necessary to take into account the elasticity of demand (the coefficient of change in demand per unit of price change). Once the equilibrium price has been found, non-price factors such as the quality of the good must be taken into account.
This is the direction I think.